Question

[minh chau]

22giờ 36phuts:7

Answer 1

[Gia Bao]

“22 giờ 36 phút : 7”

• Trước hết, chuyển “22 giờ 36 phút” thành phút:
  \(22 \&\text{nbsp};\text{gi}ờ = 22 \times 60 = 1320 \&\text{nbsp}; \text{ph} \overset{ˊ}{\text{u}} \text{t} , 22 \text{g} 36 \text{p} = 1320 + 36 = 1356 \&\text{nbsp}; \text{ph} \overset{ˊ}{\text{u}} \text{t} .\)
• Chia cho 7:
  \(1356 \div 7 = 193 \&\text{nbsp}; (\text{ph} \overset{ˊ}{\text{u}} \text{t})\&\text{nbsp};\text{d}ư\&\text{nbsp}; 5 \Longrightarrow 193 \&\text{nbsp}; \text{ph} \overset{ˊ}{\text{u}} \text{t} \textrm{ } 5 \&\text{nbsp};\text{ph} \textrm{ }\textrm{ } \left(\right. \text{d}ư \left.\right) .\)
• Nếu đổi lại thành “giờ – phút”:
  \(193 \&\text{nbsp}; \text{ph} \overset{ˊ}{\text{u}} \text{t} = 3 \&\text{nbsp};\text{gi}ờ \textrm{ }\textrm{ } 13 \&\text{nbsp}; \text{ph} \overset{ˊ}{\text{u}} \text{t} \left(\right. \text{v} \overset{ˋ}{\imath} \&\text{nbsp}; 3 \times 60 = 180 , \textrm{ }\textrm{ } 193 - 180 = 13 \left.\right) .\)
  Và còn dư 5 phút nữa.
• Kết quả:
  \(22 \&\text{nbsp};\text{gi}ờ\&\text{nbsp}; 36 \&\text{nbsp};\text{ph} \overset{ˊ}{\text{u}} \text{t} \div 7 = 3 \&\text{nbsp};\text{gi}ờ\&\text{nbsp}; 13 \&\text{nbsp};\text{ph} \overset{ˊ}{\text{u}} \text{t}\&\text{nbsp};\text{d}ư\&\text{nbsp}; 5 \&\text{nbsp};\text{ph} \overset{ˊ}{\text{u}} \text{t} .\)
  Hoặc nếu chỉ cần số thập phân (phút):
  \(1356 / 7 = 193,714285 \ldots \&\text{nbsp};(\text{ph} \overset{ˊ}{\text{u}} \text{t}) \approx 3,22857 \&\text{nbsp};\text{gi}ờ .\)